REPURCHASE AND CANCELLATION OF PART OF THE RESTRICTED A SHARES GRANTED UNDER THE 2018 A SHARE INCENTIVE PLAN AND THE 2019 A SHARE INCENTIVE PLAN

SUPPLEMENTAL ANNOUNCEMENT CONNECTED TRANSACTION PURCHASE OF SERIES A SHARES IN D3 BIO

H SHARE AWARD AND TRUST SCHEME ESTABLISHMENT OF THE MANAGEMENT COMMITTEE AND GRANT OF AUTHORIZATION TO THE MANAGEMENT COMMITTEE TO HANDLE MATTERS PERTAINING TO THE H SHARE AWARD AND TRUST SCHEME

CHANGE OF IMPLEMENTATION LOCATION AND EXPECTED TIMELINE FOR UTILIZING THE NET PROCEEDS FROM THE H SHARE LISTING ALLOCATED TO THE HONG KONG PROJECT

DELAY IN THE EXPECTED TIMELINE FOR UTILIZING THE REMAINING NET PROCEEDS FROM THE A SHARE LISTING ALLOCATED TO THE INVESTMENT PROJECTS